Inventories

6 Months Ended

Mar. 31, 2023

Inventory Disclosure [Abstract]

Inventories

Inventories

Inventories consist of:

	March 31, 2023		September 30, 2022
Raw materials and supplies	$	2,185	$	2,968
Work-in-process	5,201		3,356
Finished goods	3,890		2,645
Total inventories, net	$	11,276	$	8,969

For a portion of the Company's inventory, cost is determined using the last-in, first-out ("LIFO") method. Approximately 21% and 42% of the Company’s inventories at March 31, 2023 and September 30, 2022, respectively, use the LIFO method. An actual valuation of inventory under the LIFO method is made at the end of each fiscal year based on the inventory levels and costs existing at that time. Accordingly, interim LIFO calculations must be based on management’s estimates of expected year-end inventory levels and costs. Because the actual results may vary from these estimates, the annual results may differ from interim results as they are subject to adjustments based on the differences between the estimates and the actual results. The first-in, first-out (“FIFO”) method is used for the remainder of the inventories, which are stated at the lower of cost or net realizable value ("NRV"). If the FIFO method had been used for the inventories for which cost is determined using the LIFO method, inventories would have been $9,741 and $9,939 higher than reported at March 31, 2023 and September 30, 2022, respectively. Net realizable value is the estimated selling price in the ordinary course of business less reasonably predictable costs of completion, disposal, and transportation. The Company estimates net realizable value, excess and obsolescence and shrink reserves for its inventory based upon historical experience, historical and projected sales trends and the age of inventory on hand. As of March 31, 2023 and September 30, 2022, our inventory valuation allowances were $3,753 and $5,084, respectively.